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| Titel |
Model coupling methodology for thermo-hydro-mechanical-chemical numerical simulations in integrated assessment of long-term site behaviour |
| VerfasserIn |
Thomas Kempka, Marco De Lucia, Michael Kühn |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250112141
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| Publikation (Nr.) |
 EGU/EGU2015-12297.pdf |
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| Zusammenfassung |
| The integrated assessment of long-term site behaviour taking into account a high spatial
resolution at reservoir scale requires a sophisticated methodology to represent coupled
thermal, hydraulic, mechanical and chemical processes of relevance. Our coupling
methodology considers the time-dependent occurrence and significance of multi-phase flow
processes, mechanical effects and geochemical reactions (Kempka et al., 2014). Hereby, a
simplified hydro-chemical coupling procedure was developed (Klein et al., 2013)
and validated against fully coupled hydro-chemical simulations (De Lucia et al.,
2015).
The numerical simulation results elaborated for the pilot site Ketzin demonstrate that
mechanical reservoir, caprock and fault integrity are maintained during the time of operation
and that after 10,000 years CO2 dissolution is the dominating trapping mechanism and
mineralization occurs on the order of 10 % to 25 % with negligible changes to porosity and
permeability.
De Lucia, M., Kempka, T., Kühn, M. A coupling alternative to reactive transport
simulations for long-term prediction of chemical reactions in heterogeneous CO2 storage
systems (2014) Geosci Model Dev Discuss 7:6217–6261. doi:10.5194/gmdd-7-6217-2014.
Kempka, T., De Lucia, M., Kühn, M. Geomechanical integrity verification and mineral
trapping quantification for the Ketzin CO2 storage pilot site by coupled numerical
simulations (2014) Energy Procedia 63:3330-3338, doi:10.1016/j.egypro.2014.11.361.
Klein E, De Lucia M, Kempka T, Kühn M. Evaluation of longterm mineral
trapping at the Ketzin pilot site for CO2 storage: an integrative approach using
geo-chemical modelling and reservoir simulation. Int J Greenh Gas Con 2013; 19:720-730.
doi:10.1016/j.ijggc.2013.05.014. |
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